The correct answer is D) there was a great diversity of skill and cultures in the labor force, so there was little bargaining power to be won by unions.
Unions during the late 19th century did not enjoy great success or growth mainly because there was a great diversity of skill and cultures in the labor force, so there was little bargaining power to be won by unions.
Unions born form the worker's necessity to fight for their rights. They used to work for long hours, were paid low wages, and worked in unhealthy conditions. Basically, skilled workers were the ones who started the union movement in the United States but the problem was that there was a great diversity of skill and cultures in the labor force, so there was little bargaining power to be won by unions.
